Commit graph

1064612 commits

Author SHA1 Message Date
Tomi Valkeinen
30cb99e096 drm/bridge: tc358768: Fix bit updates
[ Upstream commit 66962d5c3c ]

The driver has a few places where it does:

if (thing_is_enabled_in_config)
	update_thing_bit_in_hw()

This means that if the thing is _not_ enabled, the bit never gets
cleared. This affects the h/vsyncs and continuous DSI clock bits.

Fix the driver to always update the bit.

Fixes: ff1ca6397b ("drm/bridge: Add tc358768 driver")
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> # Asus TF700T
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230906-tc358768-v4-4-31725f008a50@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:20 +01:00
Dmitry Osipenko
1cd4ae681a drm/bridge: tc358768: Disable non-continuous clock mode
[ Upstream commit fbc5a90e82 ]

Non-continuous clock mode doesn't work because driver doesn't support it
properly. The bridge driver programs wrong bitfields that are required by
the non-continuous mode (BTACNTRL1 register bitfields are swapped in the
code), but fixing them doesn't help.

Display panel of ASUS Transformer TF700T tablet supports non-continuous
mode and display doesn't work at all using that mode. There are no
device-trees that are actively using this DSI bridge in upstream yet,
so clearly the broken mode wasn't ever tested properly. It's a bit too
difficult to get LP mode working, hence let's disable the offending mode
for now and fall back to continuous mode.

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # Asus TF700T
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> #TF700T
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211002233447.1105-5-digetx@gmail.com
Stable-dep-of: 66962d5c3c ("drm/bridge: tc358768: Fix bit updates")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Tomi Valkeinen
c13591b859 drm/bridge: tc358768: Fix use of uninitialized variable
[ Upstream commit a2d9036615 ]

smatch reports:

drivers/gpu/drm/bridge/tc358768.c:223 tc358768_update_bits() error: uninitialized symbol 'orig'.

Fix this by bailing out from tc358768_update_bits() if the
tc358768_read() produces an error.

Fixes: ff1ca6397b ("drm/bridge: Add tc358768 driver")
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> # Asus TF700T
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230906-tc358768-v4-2-31725f008a50@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Tomi Valkeinen
d78bddd94b drm/bridge: lt8912b: Add missing drm_bridge_attach call
[ Upstream commit f45acf7acf ]

The driver does not call drm_bridge_attach(), which causes the next
bridge to not be added to the bridge chain. This causes the pipeline
init to fail when DRM_BRIDGE_ATTACH_NO_CONNECTOR is used.

Add the call to drm_bridge_attach().

Fixes: 30e2ae943c ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-4-c542692c6a2f@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Tomi Valkeinen
5cc2bc519a drm/bridge: lt8912b: Manually disable HPD only if it was enabled
[ Upstream commit 6985c5efc4 ]

lt8912b only calls drm_bridge_hpd_enable() if it creates a connector and
the next bridge has DRM_BRIDGE_OP_HPD set. However, when calling
drm_bridge_hpd_disable() it misses checking if a connector was created,
calling drm_bridge_hpd_disable() even if HPD was never enabled. I don't
see any issues caused by this wrong call, though.

Add the check to avoid wrongly calling drm_bridge_hpd_disable().

Fixes: 3b0a01a6a5 ("drm/bridge: lt8912b: Add hot plug detection")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-3-c542692c6a2f@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Tomi Valkeinen
42071feab7 drm/bridge: lt8912b: Fix crash on bridge detach
[ Upstream commit 4428399314 ]

The lt8912b driver, in its bridge detach function, calls
drm_connector_unregister() and drm_connector_cleanup().

drm_connector_unregister() should be called only for connectors
explicitly registered with drm_connector_register(), which is not the
case in lt8912b.

The driver's drm_connector_funcs.destroy hook is set to
drm_connector_cleanup().

Thus the driver should not call either drm_connector_unregister() nor
drm_connector_cleanup() in its lt8912_bridge_detach(), as they cause a
crash on bridge detach:

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=00000000858f3000
[0000000000000000] pgd=0800000085918003, p4d=0800000085918003, pud=0800000085431003, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in: tidss(-) display_connector lontium_lt8912b tc358768 panel_lvds panel_simple drm_dma_helper drm_kms_helper drm drm_panel_orientation_quirks
CPU: 3 PID: 462 Comm: rmmod Tainted: G        W          6.5.0-rc2+ #2
Hardware name: Toradex Verdin AM62 on Verdin Development Board (DT)
pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : drm_connector_cleanup+0x78/0x2d4 [drm]
lr : lt8912_bridge_detach+0x54/0x6c [lontium_lt8912b]
sp : ffff800082ed3a90
x29: ffff800082ed3a90 x28: ffff0000040c1940 x27: 0000000000000000
x26: 0000000000000000 x25: dead000000000122 x24: dead000000000122
x23: dead000000000100 x22: ffff000003fb6388 x21: 0000000000000000
x20: 0000000000000000 x19: ffff000003fb6260 x18: fffffffffffe56e8
x17: 0000000000000000 x16: 0010000000000000 x15: 0000000000000038
x14: 0000000000000000 x13: ffff800081914b48 x12: 000000000000040e
x11: 000000000000015a x10: ffff80008196ebb8 x9 : ffff800081914b48
x8 : 00000000ffffefff x7 : ffff0000040c1940 x6 : ffff80007aa649d0
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008159e008
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 drm_connector_cleanup+0x78/0x2d4 [drm]
 lt8912_bridge_detach+0x54/0x6c [lontium_lt8912b]
 drm_bridge_detach+0x44/0x84 [drm]
 drm_encoder_cleanup+0x40/0xb8 [drm]
 drmm_encoder_alloc_release+0x1c/0x30 [drm]
 drm_managed_release+0xac/0x148 [drm]
 drm_dev_put.part.0+0x88/0xb8 [drm]
 devm_drm_dev_init_release+0x14/0x24 [drm]
 devm_action_release+0x14/0x20
 release_nodes+0x5c/0x90
 devres_release_all+0x8c/0xe0
 device_unbind_cleanup+0x18/0x68
 device_release_driver_internal+0x208/0x23c
 driver_detach+0x4c/0x94
 bus_remove_driver+0x70/0xf4
 driver_unregister+0x30/0x60
 platform_driver_unregister+0x14/0x20
 tidss_platform_driver_exit+0x18/0xb2c [tidss]
 __arm64_sys_delete_module+0x1a0/0x2b4
 invoke_syscall+0x48/0x110
 el0_svc_common.constprop.0+0x60/0x10c
 do_el0_svc_compat+0x1c/0x40
 el0_svc_compat+0x40/0xac
 el0t_32_sync_handler+0xb0/0x138
 el0t_32_sync+0x194/0x198
Code: 9104a276 f2fbd5b7 aa0203e1 91008af8 (f85c0420)

Fixes: 30e2ae943c ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-2-c542692c6a2f@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Tomi Valkeinen
d9217286d0 drm/bridge: lt8912b: Fix bridge_detach
[ Upstream commit 941882a0e9 ]

The driver calls lt8912_bridge_detach() from its lt8912_remove()
function. As the DRM core detaches bridges automatically, this leads to
calling lt8912_bridge_detach() twice. The code probably has tried to
manage the double-call with the 'is_attached' variable, but the driver
never sets the variable to false, so its of no help.

Fix the issue by dropping the call to lt8912_bridge_detach() from
lt8912_remove(), as the DRM core will handle the detach call for us,
and also drop the useless is_attached field.

Fixes: 30e2ae943c ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804-lt8912b-v1-1-c542692c6a2f@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Stefan Eichenberger
cc3057958c drm/bridge: lt8912b: Add hot plug detection
[ Upstream commit 3b0a01a6a5 ]

Enable hot plug detection when it is available on the HDMI port.
Without this connecting to a different monitor with incompatible timing
before the 10 seconds poll period will lead to a broken display output.

Fixes: 30e2ae943c ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Adrien Grassein <adrien.grassein@gmail.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221128112320.25708-1-francesco@dolcini.it
Stable-dep-of: 941882a0e9 ("drm/bridge: lt8912b: Fix bridge_detach")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Maxime Ripard
ef4a40953c drm/bridge: lt8912b: Register and attach our DSI device at probe
[ Upstream commit d89078c37b ]

In order to avoid any probe ordering issue, the best practice is to move
the secondary MIPI-DSI device registration and attachment to the
MIPI-DSI host at probe time. Let's do this.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025151536.1048186-7-maxime@cerno.tech
Stable-dep-of: 941882a0e9 ("drm/bridge: lt8912b: Fix bridge_detach")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Maxime Ripard
3580b8a013 drm/bridge: lt8912b: Switch to devm MIPI-DSI helpers
[ Upstream commit 1fdbf66e3d ]

Let's switch to the new devm MIPI-DSI function to register and attach
our secondary device.

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025151536.1048186-6-maxime@cerno.tech
Stable-dep-of: 941882a0e9 ("drm/bridge: lt8912b: Fix bridge_detach")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Maxime Ripard
52541851a8 drm/mipi-dsi: Create devm device attachment
[ Upstream commit db6568498b ]

MIPI-DSI devices need to call mipi_dsi_attach() when their probe is done
to attach against their host.

However, at removal or when an error occurs, that attachment needs to be
undone through a call to mipi_dsi_detach().

Let's create a device-managed variant of the attachment function that
will automatically detach the device at unbind.

Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210910101218.1632297-5-maxime@cerno.tech
Stable-dep-of: 941882a0e9 ("drm/bridge: lt8912b: Fix bridge_detach")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Maxime Ripard
a20d6ecd26 drm/mipi-dsi: Create devm device registration
[ Upstream commit a1419fb4a7 ]

Devices that take their data through the MIPI-DSI bus but are controlled
through a secondary bus like I2C have to register a secondary device on
the MIPI-DSI bus through the mipi_dsi_device_register_full() function.

At removal or when an error occurs, that device needs to be removed
through a call to mipi_dsi_device_unregister().

Let's create a device-managed variant of the registration function that
will automatically unregister the device at unbind.

Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210910101218.1632297-4-maxime@cerno.tech
Stable-dep-of: 941882a0e9 ("drm/bridge: lt8912b: Fix bridge_detach")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Konstantin Meskhidze
347f025a02 drm/radeon: possible buffer overflow
[ Upstream commit dd05484f99 ]

Buffer 'afmt_status' of size 6 could overflow, since index 'afmt_idx' is
checked after access.

Fixes: 5cc4e5fc29 ("drm/radeon: Cleanup HDMI audio interrupt handling for evergreen")
Co-developed-by: Ivanov Mikhail <ivanov.mikhail1@huawei-partners.com>
Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Jonas Karlman
b163b371d7 drm/rockchip: vop: Fix call to crtc reset helper
[ Upstream commit 5aacd29083 ]

Allocation of crtc_state may fail in vop_crtc_reset, causing an invalid
pointer to be passed to __drm_atomic_helper_crtc_reset.

Fix this by adding a NULL check of crtc_state, similar to other drivers.

Fixes: 01e2eaf40c ("drm/rockchip: Convert to using __drm_atomic_helper_crtc_reset() for reset.")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230621223311.2239547-4-jonas@kwiboo.se
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Jonas Karlman
9a96bed1df drm/rockchip: vop: Fix reset of state in duplicate state crtc funcs
[ Upstream commit 13fc28804b ]

struct rockchip_crtc_state members such as output_type, output_bpc and
enable_afbc is always reset to zero in the atomic_duplicate_state crtc
funcs.

Fix this by using kmemdup on the subclass rockchip_crtc_state struct.

Fixes: 4e257d9eee ("drm/rockchip: get rid of rockchip_drm_crtc_mode_config")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230621223311.2239547-2-jonas@kwiboo.se
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:19 +01:00
Zhang Rui
1b0bc99cf3 hwmon: (coretemp) Fix potentially truncated sysfs attribute name
[ Upstream commit bbfff736d3 ]

When build with W=1 and "-Werror=format-truncation", below error is
observed in coretemp driver,

   drivers/hwmon/coretemp.c: In function 'create_core_data':
>> drivers/hwmon/coretemp.c:393:34: error: '%s' directive output may be truncated writing likely 5 or more bytes into a region of size between 3 and 13 [-Werror=format-truncation=]
     393 |                          "temp%d_%s", attr_no, suffixes[i]);
         |                                  ^~
   drivers/hwmon/coretemp.c:393:26: note: assuming directive output of 5 bytes
     393 |                          "temp%d_%s", attr_no, suffixes[i]);
         |                          ^~~~~~~~~~~
   drivers/hwmon/coretemp.c:392:17: note: 'snprintf' output 7 or more bytes (assuming 22) into a destination of size 19
     392 |                 snprintf(tdata->attr_name[i], CORETEMP_NAME_LENGTH,
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     393 |                          "temp%d_%s", attr_no, suffixes[i]);
         |                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors

Given that
1. '%d' could take 10 charactors,
2. '%s' could take 10 charactors ("crit_alarm"),
3. "temp", "_" and the NULL terminator take 6 charactors,
fix the problem by increasing CORETEMP_NAME_LENGTH to 28.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Fixes: 7108b80a54 ("hwmon/coretemp: Handle large core ID value")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310200443.iD3tUbbK-lkp@intel.com/
Link: https://lore.kernel.org/r/20231025122316.836400-1-rui.zhang@intel.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Dragos Bogdan
b3e7eb23a6 hwmon: (axi-fan-control) Fix possible NULL pointer dereference
[ Upstream commit 2a5b3370a1 ]

axi_fan_control_irq_handler(), dependent on the private
axi_fan_control_data structure, might be called before the hwmon
device is registered. That will cause an "Unable to handle kernel
NULL pointer dereference" error.

Fixes: 8412b410fa ("hwmon: Support ADI Fan Control IP")
Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20231025132100.649499-1-nuno.sa@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Armin Wolf
e0bf076b73 platform/x86: wmi: Fix opening of char device
[ Upstream commit eba9ac7aba ]

Since commit fa1f68db6c ("drivers: misc: pass miscdevice pointer via
file private data"), the miscdevice stores a pointer to itself inside
filp->private_data, which means that private_data will not be NULL when
wmi_char_open() is called. This might cause memory corruption should
wmi_char_open() be unable to find its driver, something which can
happen when the associated WMI device is deleted in wmi_free_devices().

Fix the problem by using the miscdevice pointer to retrieve the WMI
device data associated with a char device using container_of(). This
also avoids wmi_char_open() picking a wrong WMI device bound to a
driver with the same name as the original driver.

Fixes: 44b6b76611 ("platform/x86: wmi: create userspace interface for drivers")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231020211005.38216-5-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Barnabás Pőcze
c57e81d5e5 platform/x86: wmi: remove unnecessary initializations
[ Upstream commit 43aacf838e ]

Some pointers are initialized when they are defined,
but they are almost immediately reassigned in the
following lines. Remove these superfluous assignments.

Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Link: https://lore.kernel.org/r/20210904175450.156801-6-pobrn@protonmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Stable-dep-of: eba9ac7aba ("platform/x86: wmi: Fix opening of char device")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Armin Wolf
2ca4e461a2 platform/x86: wmi: Fix probe failure when failing to register WMI devices
[ Upstream commit ed85891a27 ]

When a WMI device besides the first one somehow fails to register,
retval is returned while still containing a negative error code. This
causes the ACPI device fail to probe, leaving behind zombie WMI devices
leading to various errors later.

Handle the single error path separately and return 0 unconditionally
after trying to register all WMI devices to solve the issue. Also
continue to register WMI devices even if some fail to allocate memory.

Fixes: 6ee50aaa9a ("platform/x86: wmi: Instantiate all devices before adding them")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231020211005.38216-4-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Varadarajan Narayanan
f75e11f54d clk: qcom: config IPQ_APSS_6018 should depend on QCOM_SMEM
[ Upstream commit 6a15647d0a ]

The config IPQ_APSS_6018 should depend on QCOM_SMEM, to
avoid the following error reported by 'kernel test robot'

	loongarch64-linux-ld: drivers/clk/qcom/apss-ipq6018.o: in function `apss_ipq6018_probe':
	>> apss-ipq6018.c:(.text+0xd0): undefined reference to `qcom_smem_get_soc_id'

Fixes: 5e77b4ef1b ("clk: qcom: Add ipq6018 apss clock controller")
Reported-by: kernel test robot <yujie.liu@intel.com>
Closes: https://lore.kernel.org/r/202310181650.g8THtfsm-lkp@intel.com/
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Link: https://lore.kernel.org/r/f4c4d65a7cb71e807d6d472c63c7718408c8f5f0.1697781921.git.quic_varada@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Jiasheng Jiang
d1175cf4bd clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data
[ Upstream commit 0d6e24b422 ]

Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.

Fixes: e986211827 ("clk: mediatek: Add MT2701 clock support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230901024658.23405-1-jiasheng@iscas.ac.cn
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Jiasheng Jiang
e964d21dc0 clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data
[ Upstream commit 2befa515c1 ]

Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.

Fixes: 3b5e748615 ("clk: mediatek: add clock support for MT7629 SoC")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230912093407.21505-5-jiasheng@iscas.ac.cn
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Jiasheng Jiang
c4070ada5d clk: mediatek: clk-mt7629-eth: Add check for mtk_alloc_clk_data
[ Upstream commit 0884393c63 ]

Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.

Fixes: 3b5e748615 ("clk: mediatek: add clock support for MT7629 SoC")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230912093407.21505-4-jiasheng@iscas.ac.cn
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Jiasheng Jiang
3aefc6fcfb clk: mediatek: clk-mt6797: Add check for mtk_alloc_clk_data
[ Upstream commit 606f6366a3 ]

Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.

Fixes: 96596aa066 ("clk: mediatek: add clk support for MT6797")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230912093407.21505-3-jiasheng@iscas.ac.cn
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Jiasheng Jiang
ca6d565a23 clk: mediatek: clk-mt6779: Add check for mtk_alloc_clk_data
[ Upstream commit 1f57f78fba ]

Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.

Fixes: 710774e048 ("clk: mediatek: Add MT6779 clock support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230912093407.21505-2-jiasheng@iscas.ac.cn
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Jiasheng Jiang
533ca5153a clk: mediatek: clk-mt6765: Add check for mtk_alloc_clk_data
[ Upstream commit b826810427 ]

Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.

Fixes: 1aca9939bf ("clk: mediatek: Add MT6765 clock support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230912093407.21505-1-jiasheng@iscas.ac.cn
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Jonathan Neuschäfer
e531e4e737 clk: npcm7xx: Fix incorrect kfree
[ Upstream commit bbc5080bef ]

The corresponding allocation is:

> npcm7xx_clk_data = kzalloc(struct_size(npcm7xx_clk_data, hws,
> 			     NPCM7XX_NUM_CLOCKS), GFP_KERNEL);

... so, kfree should be applied to npcm7xx_clk_data, not
npcm7xx_clk_data->hws.

Fixes: fcfd143698 ("clk: npcm7xx: add clock controller")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20230923133127.1815621-1-j.neuschaefer@gmx.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Dan Carpenter
761c2a690d clk: ti: fix double free in of_ti_divider_clk_setup()
[ Upstream commit 7af5b9eadd ]

The "div" pointer is freed in _register_divider() and again in
of_ti_divider_clk_setup().  Delete the free in _register_divider()

Fixes: fbbc185915 ("clk: ti: divider: cleanup _register_divider and ti_clk_get_div_table")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/6d36eeec-6c8a-4f11-a579-aa3cd7c38749@moroto.mountain
Reviewed-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:18 +01:00
Dario Binacchi
1c37faca09 clk: ti: change ti_clk_register[_omap_hw]() API
[ Upstream commit 3400d546a7 ]

The ti_clk_register() and ti_clk_register_omap_hw() functions are always
called with the parameter of type "struct device" set to NULL, since the
functions from which they are called always have a parameter of type
"struct device_node". Replacing "struct device" type parameter with
"struct device_node" will allow you to register a TI clock to the common
clock framework by taking advantage of the facilities provided by the
"struct device_node" type. Further, adding the "of_" prefix to the name
of these functions explicitly binds them to the "struct device_node"
type.

The patch has been tested on a Beaglebone board.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20221113181147.1626585-1-dario.binacchi@amarulasolutions.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stable-dep-of: 7af5b9eadd ("clk: ti: fix double free in of_ti_divider_clk_setup()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Tony Lindgren
28b72fba1e clk: ti: Update component clocks to use ti_dt_clk_name()
[ Upstream commit ed06099c5d ]

Let's update all the TI component clocks to use ti_dt_clk_name() instead
of devicetree node name if available.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220204071449.16762-9-tony@atomide.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stable-dep-of: 7af5b9eadd ("clk: ti: fix double free in of_ti_divider_clk_setup()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Tony Lindgren
c4bffed2e5 clk: ti: Update pll and clockdomain clocks to use ti_dt_clk_name()
[ Upstream commit 9e56a7d426 ]

Let's update the TI pll and clockdomain clocks to use ti_dt_clk_name()
instead of devicetree node name if available.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220204071449.16762-8-tony@atomide.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stable-dep-of: 7af5b9eadd ("clk: ti: fix double free in of_ti_divider_clk_setup()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Tony Lindgren
9b5e9d8bf9 clk: ti: Add ti_dt_clk_name() helper to use clock-output-names
[ Upstream commit 2c1593328d ]

Let's create the clock alias based on the clock-output-names property if
available. Also the component clock drivers can use ti_dt_clk_name() in
the following patches.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220204071449.16762-7-tony@atomide.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stable-dep-of: 7af5b9eadd ("clk: ti: fix double free in of_ti_divider_clk_setup()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Dan Carpenter
f45fff806e clk: keystone: pll: fix a couple NULL vs IS_ERR() checks
[ Upstream commit a5d14f8b55 ]

The clk_register_divider() and clk_register_mux() functions returns
error pointers on error but this code checks for NULL.  Fix that.

Fixes: b9e0d40c0d ("clk: keystone: add Keystone PLL clock driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/d9da4c97-0da9-499f-9a21-1f8e3f148dc1@moroto.mountain
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Han Xu
7ff8ca9bee spi: nxp-fspi: use the correct ioremap function
[ Upstream commit c3aa5cb264 ]

AHB memory as MMIO should be mapped with ioremap rather than ioremap_wc,
which should have been used initially just to handle unaligned access as
a workaround.

Fixes: d166a73503 ("spi: fspi: dynamically alloc AHB memory")
Signed-off-by: Han Xu <han.xu@nxp.com>
Link: https://lore.kernel.org/r/20231010201524.2021340-1-han.xu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Claudiu Beznea
26206c858d clk: renesas: rzg2l: Fix computation formula
[ Upstream commit a2b2315949 ]

According to the hardware manual for RZ/G2L
(r01uh0914ej0130-rzg2l-rzg2lc.pdf), the computation formula for PLL rate
is as follows:

    Fout = ((m + k/65536) * Fin) / (p * 2^s)

and k has values in the range [-32768, 32767].  Dividing k by 65536 with
integer arithmetic gives zero all the time, causing slight differences
b/w what has been set vs. what is displayed.  Thus, get rid of this and
decompose the formula before dividing k by 65536.

Fixes: ef3c613ccd ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230929053915.1530607-6-claudiu.beznea@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Claudiu Beznea
1966bf2a79 clk: renesas: rzg2l: Use FIELD_GET() for PLL register fields
[ Upstream commit 72977f07b0 ]

Use FIELD_GET() for PLL register fields.  This is its purpose.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230912045157.177966-14-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Stable-dep-of: a2b2315949 ("clk: renesas: rzg2l: Fix computation formula")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Geert Uytterhoeven
7ece2efa87 clk: renesas: rzg2l: Simplify multiplication/shift logic
[ Upstream commit 29db30c45f ]

"a * (1 << b)" == "a << b".

No change in generated code.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/71e1cf2e30fb2d7966fc8ec6bab23eb7e24aa1c4.1645460687.git.geert+renesas@glider.be
Stable-dep-of: a2b2315949 ("clk: renesas: rzg2l: Fix computation formula")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Robert Chiras
e2239f7165 clk: imx: imx8qxp: Fix elcdif_pll clock
[ Upstream commit 15cee75dac ]

Move the elcdif_pll clock initialization before the lcd_clk, since the
elcdif_clk needs to be initialized ahead of lcd_clk, being its parent.
This change fixes issues with the LCD clocks during suspend/resume.

Fixes: babfaa9556 ("clk: imx: scu: add more scu clocks")
Suggested-by: Ranjani Vaidyanathan <ranjani.vaidyanathan@nxp.com>
Acked-by: Laurentiu Palcu <laurentiu.palcu@nxp.com>
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20230912-imx8-clk-v1-v1-2-69a34bcfcae1@nxp.com
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Peng Fan
7d416973cd clk: imx: imx8mq: correct error handling path
[ Upstream commit 577ad16996 ]

Avoid memory leak in error handling path. It does not make
much sense for the SoC without clk driver, to make program behavior
correct, let's fix it.

Fixes: b80522040c ("clk: imx: Add clock driver for i.MX8MQ CCM")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/r/202309240551.e46NllPa-lkp@intel.com/
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20231001122618.194498-1-peng.fan@oss.nxp.com
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Abel Vesa
608ebb098b clk: imx: Select MXC_CLK for CLK_IMX8QXP
[ Upstream commit 317e69c49b ]

If the i.MX8QXP clock provider is built-in but the MXC_CLK is
built as module, build fails:

aarch64-linux-ld: drivers/clk/imx/clk-imx8-acm.o: in function `imx8_acm_clk_probe':
clk-imx8-acm.c:(.text+0x3d0): undefined reference to `imx_check_clk_hws'

Fix that by selecting MXC_CLK in case of CLK_IMX8QXP.

Fixes: c2cccb6d0b ("clk: imx: add imx8qxp clk driver")
Closes: https://lore.kernel.org/all/8b77219e-b59e-40f1-96f1-980a0b2debcf@infradead.org/
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Danila Tikhonov
8861b2925a clk: qcom: gcc-sm8150: Fix gcc_sdcc2_apps_clk_src
[ Upstream commit 7138c244fb ]

Set .flags = CLK_OPS_PARENT_ENABLE to fix "gcc_sdcc2_apps_clk_src: rcg
didn't update its configuration" error.

Fixes: 2a1d7eb854 ("clk: qcom: gcc: Add global clock controller driver for SM8150")
Tested-by: Arseniy Velikanov <adomerlee@gmail.com>
Signed-off-by: Danila Tikhonov <danila@jiaxyga.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230913175612.8685-1-danila@jiaxyga.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Konrad Dybcio
76e8f00f54 clk: qcom: mmcc-msm8998: Fix the SMMU GDSC
[ Upstream commit 1fc62c8347 ]

The SMMU GDSC doesn't have to be ALWAYS-ON and shouldn't feature the
HW_CTRL flag (it's separate from hw_ctrl_addr).  In addition to that,
it should feature a cxc entry for bimc_smmu_axi_clk and be marked as
votable.

Fix all of these issues.

Fixes: d14b15b593 ("clk: qcom: Add MSM8998 Multimedia Clock Controller (MMCC) driver")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://lore.kernel.org/r/20230531-topic-8998_mmssclk-v3-5-ba1b1fd9ee75@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:17 +01:00
Konrad Dybcio
56c4bb46a5 clk: qcom: mmcc-msm8998: Don't check halt bit on some branch clks
[ Upstream commit 9906c41408 ]

Some branch clocks are governed externally and we're only supposed to
send a request concerning their shutdown, not actually ensure it happens.

Use the BRANCH_HALT_SKIP define to skip checking the halt bit.

Fixes: d14b15b593 ("clk: qcom: Add MSM8998 Multimedia Clock Controller (MMCC) driver")
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230531-topic-8998_mmssclk-v3-4-ba1b1fd9ee75@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:16 +01:00
Devi Priya
0881d24cf5 clk: qcom: clk-rcg2: Fix clock rate overflow for high parent frequencies
[ Upstream commit f7b7d30158 ]

If the parent clock rate is greater than unsigned long max/2 then
integer overflow happens when calculating the clock rate on 32-bit systems.
As RCG2 uses half integer dividers, the clock rate is first being
multiplied by 2 which will overflow the unsigned long max value.
Hence, replace the common pattern of doing 64-bit multiplication
and then a do_div() call with simpler mult_frac call.

Fixes: bcd61c0f53 ("clk: qcom: Add support for root clock generators (RCGs)")
Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Link: https://lore.kernel.org/r/20230901073640.4973-1-quic_devipriy@quicinc.com
[bjorn: Also drop unnecessary {} around single statements]
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:16 +01:00
Zhang Shurong
b64683f5d7 spi: tegra: Fix missing IRQ check in tegra_slink_probe()
[ Upstream commit eb9913b511 ]

This func misses checking for platform_get_irq()'s call and may passes the
negative error codes to request_irq(), which takes unsigned IRQ #,
causing it to fail with -EINVAL, overriding an original error code.

Fix this by stop calling request_irq() with invalid IRQ #s.

Fixes: dc4dc36056 ("spi: tegra: add spi driver for SLINK controller")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Reviewed-by: Helen Koike <helen.koike@collabora.com>
Link: https://lore.kernel.org/r/tencent_73FCC06A3D1C14EE5175253C6FB46A07B709@qq.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:16 +01:00
Christophe JAILLET
b13e8b38be regmap: debugfs: Fix a erroneous check after snprintf()
[ Upstream commit d3601857e1 ]

This error handling looks really strange.
Check if the string has been truncated instead.

Fixes: f0c2319f9f ("regmap: Expose the driver name in debugfs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/8595de2462c490561f70020a6d11f4d6b652b468.1693857825.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:16 +01:00
Eric Dumazet
8fafac4073 ipvlan: properly track tx_errors
[ Upstream commit ff672b9ffe ]

Both ipvlan_process_v4_outbound() and ipvlan_process_v6_outbound()
increment dev->stats.tx_errors in case of errors.

Unfortunately there are two issues :

1) ipvlan_get_stats64() does not propagate dev->stats.tx_errors to user.

2) Increments are not atomic. KCSAN would complain eventually.

Use DEV_STATS_INC() to not miss an update, and change ipvlan_get_stats64()
to copy the value back to user.

Fixes: 2ad7bf3638 ("ipvlan: Initial check-in of the IPVLAN driver.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mahesh Bandewar <maheshb@google.com>
Link: https://lore.kernel.org/r/20231026131446.3933175-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:16 +01:00
Eric Dumazet
3eedc19a9d net: add DEV_STATS_READ() helper
[ Upstream commit 0b068c714c ]

Companion of DEV_STATS_INC() & DEV_STATS_ADD().

This is going to be used in the series.

Use it in macsec_get_stats64().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: ff672b9ffe ("ipvlan: properly track tx_errors")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:16 +01:00
Yan Zhai
359bce81b8 ipv6: avoid atomic fragment on GSO packets
[ Upstream commit 03d6c848bf ]

When the ipv6 stack output a GSO packet, if its gso_size is larger than
dst MTU, then all segments would be fragmented. However, it is possible
for a GSO packet to have a trailing segment with smaller actual size
than both gso_size as well as the MTU, which leads to an "atomic
fragment". Atomic fragments are considered harmful in RFC-8021. An
Existing report from APNIC also shows that atomic fragments are more
likely to be dropped even it is equivalent to a no-op [1].

Add an extra check in the GSO slow output path. For each segment from
the original over-sized packet, if it fits with the path MTU, then avoid
generating an atomic fragment.

Link: https://www.potaroo.net/presentations/2022-03-01-ipv6-frag.pdf [1]
Fixes: b210de4f8c ("net: ipv6: Validate GSO SKB before finish IPv6 processing")
Reported-by: David Wragg <dwragg@cloudflare.com>
Signed-off-by: Yan Zhai <yan@cloudflare.com>
Link: https://lore.kernel.org/r/90912e3503a242dca0bc36958b11ed03a2696e5e.1698156966.git.yan@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:08:16 +01:00